Home / 113,915.85-157,172.31-65,515.14

Finding the Fourth Proportional to 113,915.85, 157,172.31 and 65,515.14

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Solution

The fourth proportional to 113,915.85, 157,172.31 and 65,515.14 is: 90,392.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,915.85 : 157,172.31 = 65,515.14 : x
  2. Step 2: Convert to fraction form
    113,915.85/157,172.31 = 65,515.14/x
  3. Step 3: Cross multiply
    113,915.85x = 157,172.31 × 65,515.14
  4. Step 4: Simplify right side
    113,915.85x = 10,297,165,893.77
  5. Step 5: Solve for x
    x = 10,297,165,893.77/113,915.85
  6. Step 6: Final answer
    x = 90,392.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.